lecture 5

Question 1

receptors of the heart

Answer 1

B1 adrenoreceptor and M2 cholinergic receptor

Question 2

receptors of the arterioles

Answer 2

a1, a2, constriction large coronary. B2 dilation small coronary

Question 3

receptors of the bronchi

Answer 3

B2 receptor for circulating adrenaline. constriction and secretion via M3.

Question 4

receptors of the skin

Answer 4

cholinergic secretion via M3 receptor

Question 5

presynaptic modulation

Answer 5

sympathetic and parasympathetic affect each other by directly releasing each others neurotransmitter onto each other.

Question 6

neuromodulation

Answer 6

generally involve second messenger regulation of membrane ion channels

Question 7

autoinhibitory feedback

Answer 7

transmitter inhibits its own release

Question 8

prazosin

Answer 8

alpha1 antagonist

Question 9

presynaptic inhibition

Answer 9

part of the neurotransmitter gives negative feedback and doesnt reach the target receptor. In many NA and cholinergic terminals

Question 10

heterotropic presynaptic inhibition

Answer 10

axons give negative feedback to each other and have opposing effects. in NA/cholinergic nerve terminals in the heart

Question 11

postsynaptic synergism

Answer 11

one neurotransmitter enhances the effect of the other or two neurotransmitters stimulate the same effect via different ways

Question 12

exocytosis

Answer 12

release of content from the axon into the synaptic cleft